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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Watson Lake A Threshold Days by Year (CA002101200)

13 fixed thresholds counted per year at Watson Lake A (CA002101200): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Watson Lake A Thresholds

  • Watson Lake A: days with a maximum temperature at or below 0 C (32 F) in 45 years, most in 1951 with 155.
  • Watson Lake A: nights with a minimum temperature at or below 0 C (32 F) in 45 years, most in 1940 with 251.
  • Watson Lake A: nights with a minimum temperature at or below -10 C (14 F) in 45 years, most in 1972 with 172.
  • Watson Lake A: nights with a minimum temperature at or below -20 C (-4 F) in 45 years, most in 1950 with 123.
  • 13 fixed thresholds have at least one qualifying day at Watson Lake A.
20 years with a qualifying day
Days at or above 30 C (86 F) per year at Watson Lake A Days per year at Watson Lake A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 6 in 1969. 02461941: 11944: 11948: 31950: 41951: 31953: 31955: 31958: 31960: 11962: 21963: 11966: 21969: 61971: 61977: 21978: 11980: 11981: 21982: 11983: 11941194819511955196019631969197719801982
Days per year at Watson Lake A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 6 in 1969.
Days at or above 30 C (86 F) per year at Watson Lake A
YearDaysDecade average
194111.7
194411.7
194831.7
195043.2
195133.2
195333.2
195533.2
195833.2
196012.4
196222.4
196312.4
196622.4
196962.4
197163
197723
197813
198011.3
198121.3
198211.3
198311.3
First to last qualifying date each year at Watson Lake A For each year, a bar from the first to the last day at Watson Lake A meeting 30 C (86 F). 1941: 17 July 1941 to 17 July 19411944: 17 June 1944 to 17 June 19441948: 29 May 1948 to 16 August 19481950: 16 June 1950 to 19 June 19501951: 9 July 1951 to 11 July 19511953: 8 July 1953 to 5 August 19531955: 4 July 1955 to 9 July 19551958: 6 June 1958 to 17 July 19581960: 7 August 1960 to 7 August 19601962: 30 July 1962 to 31 July 19621963: 18 August 1963 to 18 August 19631966: 14 July 1966 to 16 July 19661969: 9 June 1969 to 16 June 19691971: 13 July 1971 to 10 August 19711977: 5 August 1977 to 19 August 19771978: 3 August 1978 to 3 August 19781980: 7 June 1980 to 7 June 19801981: 16 July 1981 to 18 July 19811982: 28 July 1982 to 28 July 19821983: 30 May 1983 to 30 May 19831941195019551962196919781982JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Watson Lake A meeting 30 C (86 F).
First to last qualifying date each year at Watson Lake A
YearFirst dateLast date
19411941-07-171941-07-17
19441944-06-171944-06-17
19481948-05-291948-08-16
19501950-06-161950-06-19
19511951-07-091951-07-11
19531953-07-081953-08-05
19551955-07-041955-07-09
19581958-06-061958-07-17
19601960-08-071960-08-07
19621962-07-301962-07-31
19631963-08-181963-08-18
19661966-07-141966-07-16
19691969-06-091969-06-16
19711971-07-131971-08-10
19771977-08-051977-08-19
19781978-08-031978-08-03
19801980-06-071980-06-07
19811981-07-161981-07-18
19821982-07-281982-07-28
19831983-05-301983-05-30

Every Fixed Threshold

Fixed thresholds at Watson Lake A
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days20619691
90 F (32.2 C): Days7219501
0 C (32 F): Ice days (max451551951154
0 C (32 F): Frost days (min452511940238
-10 C (14 F): Days with min451721972157
-20 C (-4 F): Days with min451231950108
-30 C (-22 F): Days with min4573195143
-40 C (-40 F): Days with min4527196912
20 C (68 F): Tropical nights (min1119421
10 mm (0.39 in): Days with 10 mm or more rain452019624
25 mm (0.98 in): Days with 25 mm or more rain19219421
10 cm (3.9 in): Days with 10 cm or more snowfall41719622
25 cm (9.8 in): Days with 25 cm or more snowfall4119521

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

Download the Data

  • Data for Watson Lake A threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).